What happens to blood pressure when ventricles contract?!
Question: What happens to blood pressure when ventricles contract?
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Blood pressure readings are measured in millimeters of mercury (mmHg) and are given as two numbers. For example, 110 over 70 (written as 110/70).
* The top number is the systolic blood pressure reading. It represents the maximum pressure exerted when the heart contracts.
* The bottom number is the diastolic blood pressure reading. It represents the minimum pressure in the arteries when the heart is at rest.
http://www.nlm.nih.gov/medlineplus/ency/…
http://en.wikipedia.org/wiki/Blood_press…